schultis



C.,F. vSCHULTIS.

ELEVATING TRUCK.

APPLICATION FILED Nov. 3. 191s.

MWK

C. F. SCHULTIS.1

ELEVMING TRUCK;

APPLICATION FILEB NOV. HHS.

l'fwtentd May 13, 1.919.

2 SHEETSHSHET 2.

'31: @xfa TED sfri'i'ins' PATENT orrioii.

CHARLES F. SCI-IULTIS, OIF CLEVELAND, OHIO, ASSIGNOR, BY MESNEASSIGNMENTS, TO THE STANDARD PARTS COMPANY, OF CLEVELAND, OHIO, ACORPORATION F OHIO.

ELEVAT1NG-TRUCK Specification of Letters Patent.

Patented May 13, 1919.

Application led November 3, 1916. Serial No. 129,258.

To all whom it may' concern:

Be it known that I, Ci-IARLESv F. SoHULTIs, a citizen of the UnitedStates, residing at Cleveland, in the countyl of Cuyahoga and State ofOhio, have invented a certain new and useful Improvement in Elevating-Trucks, of which the following is a'full, clear, and exact description,reference being had to the accompanying drawings.

This invention relates to trucks, and more particularly to what areknown to the trade as shop trucks which are employed in factories forthe transportation of articles, 'the trucks bein propelled in anysuitable Inanner. It is t e general object of this invention to providea truck of the character described which may be placed beneath aplatform containing articles to be transported and havin a table orload-carrying part which may 4 e elevated to enable it tolift theplatfoi'm with its load and which, when the 4 platform and load havebeen transported to the desired unloading station, may be convenientlylowered until the weight of the platform is taken from the truck,whereupon the truck may be transported to another similar platform andthe operation be re'- peated. Still further and more generally statedthe invention may be defined as consisting of the combinations ofelements embodied in the claims hereto annexed and illustrated in thedrawings forming part hereof wherein Figure 1 represents a perspectiveview of the truck and load-carrying platform; Fig. 2 a longitudinalcentral sec' tion taken through the truck; Fi 3 a horizontal sectionalView correspon ing to the line 3-3 of Fig. 2; Fig..4 a transversesectional view correspondin to the line 4-54 of Fig. 3; and Fig. 5 adetail corresponding -to the line 55 of Fig. 4, certain parts beingshown in elevation.

Describing by reference characters the various parts illustrated herein,1 denotes enerally the bed or frame of the truck, said ed or framecomprising a floor 2 having vertical sides 3 and ends 4, 4". rIhe bed orframe is preferably formed of a casting and is provided with acentrallongitudinal rib 5 forming a brace between a rear bearing sleeve 6 and afront bearing sleeve 7. On its upper surface, the floor 2 is providedwith a pair of ball races 8 and 9 surrounding the sleeves or hubs 6 and7, respectively, and preferably cast' with the door. y

10 and 11 denote, respectively, a rear and a front worm wheel, Yeachhaving a rigid ball race 10? and 11El respectively, preferably casttherewith, there being balls 12, 12a interposed between said races. Eachworm gear as rigid therewith a circular track, coaxial with a centralsleeve or hub 13, 14, and each track has two inclines 15 and 16respectively,

providing a air of inclines for each worm y `21 forminga skirt extendingabout the upvvardly proJecting sides and ends of the bed or frame 1. Thetable, with its sides and ends, is preferably formed by casting, thesides and ends of the table being provided with machined bearingsurfaces 22 coperating with correspondin machined surfaces 23 on thewalls of the ged frame, whereby the table will be guided and centered asit is reciprocated. 24 denotes triangular brackets which depend from thefloor 19 and which are formed with bearings for the shafts 25 of rollers26, there being a pair of such brackets for each roller. Four suchlrollers are provided, the rollers being arranged in airs at the frontand at the rear of the platorm, the 4rollers of each pair being 180apart and being so arranged as to ride upon- `the tracks 15 and 16respectively.

The rear axle 27 maybe supported in any convenient manner by the bed 1,said axle having wheels 28fon the .outer ends thereof. From lthe frontwall 4a there extends a yoke, preferably cast therewith, said yokecomprising a pair of upwardly inclined converging arms 29 provided attheir junction with a ioo yoke arms 29. The truck illustrated herein isa small or'hand propelled truck and is provided with the tongue 36 whichis pivotally connected to the ends of the shaft 33 by means of ,a yoke37 For the purpose of rotating the worm gears 10 and 11 and the trackscarried thereby, the following construction is provided 38 denotes apost which may be cast with a bracket 39 in front and at one side of thev bed `iframe. 40 denotes an inclined brace for said post, the bracebeing preferably cast with the post and riveted or otherwise suitablysecured to one of the yoke arms 29, as indicated at 41. 42 denotes asprocket which is journaled on the upperend of an extension '38 of thepost 38 and provided with an operating crank arm 43. 44 denotes asprocket whlch is rigidwith a worm shaft 45 extending lengthwise of theskirt 20a and supported by journals 20b projecting laterally therefrom.Bower-may be transmitted from the sprocket 42 to the sprocket 44 as bymeans ofa noiseless chain 46.` The shaft 45 is provided with a pair ofworms 46 and 47 meshing respectively with the`- worm gears 10 and 11.The extension 38a is socketed into the top of the post 38 and may beadjusted longitudinally of said post 'to compensate for the wear of thechain 46, a set screw 38b being employed to retain the extension in itsvarious adjusted positions, the extension having a flattened taperedsurface 38c for engagement by the set screwsee Fig. 5.

With the partsconstructed and arranged vas described, the operation willbe easily understood. The truck, with the table in its lowered position,is placed beneath the.

load-supporting platform. 48, the rollers 26 at this time being onthelowest portion of their respective tracks. -The crank 43 1s operatedthereby driving the worm shaft 45 and rotating the worm gears l10 and11,

' which will cause the rollers 26 to ride up the inclines l5 and 16'until the platform 48 with its load has been lifted, whereu on thetruck may be transportedtothe desired unloading station and, byoperating the' crank 43 farther in the same direction, or inthe reversedirection, the table 19 will be loweredV and the platform 20 will bepositioned on the ioor, `whereupon the truck may be transported to.another place and the operation repeated. f The construction of truckdisclosed herein is extremelysimple and economical of production, sincepractically all of the parts may be made as castings, but is extremelyconvenient and efficient in operation. While I have shown my inventionas embodied 1n l a small hand-propelled truck, it will be evident thatit is capable of being embodied in various forms and constructions ofvehicles;

and I do not propose to be limited to the details of constructionillustrated herein eX- cept as such limitations may be positivelyincluded in the claims hereto annexed or the inclusion of such detailsmay be rendered necessary by the state of the prior art.

I claim- 1. In a vehicle of the character described, the combination ofa frame, a load carrying table having a dependin skirt, said skirt beingspacedfrom said rame, interengaging guides carried by said skirt and theframe, and means for raising and lowering the table with reference tothe frame.

' 2. In a vehicle of the character described,

.the combination of a frame having upwardly extending sides and ends, aloadcarrying table having a depending skirt arranged externally of thesaid sides and ends, said skirt being spaced from said frame,interengaging guides carried by the skirt and said sides and ends, andmeans for raising and lowering .the table with reference to the frame.

3. In a vehicle of the character described, the combination of a frame,a pair of longitudinally spaced horizontally disposed rotary inclinedtracks carried by said frame, a load carrying table having means adaptedto engage said tracks, and means for rotating` said tracks thereby toraise and lower said table with reference to the frame.

. 4. Inan apparatus ofthe character described, the combination of aframe, a pair of horizontally disposed gears rotatably mounted on saidframe and spaced longitudinally thereof, an inclined track carried byeach of said gears, a table having depending rollers adapted to engagethe upper surface of said tracks, and means for driving said gears, onein the counter-clockwise direction and the other in-a clock-wisedirection thereby to raise or lower said table.

5. In a vehicle of the character described, the combination of a frame,a pair of gears journaled on said frame and rotatable each about avertical axis, a continuous inclined track carried by each of saidgears, a table having depending rollers adapted to engage said tracks,and means for driving said gears thereby to raise and lower said table.

6. In a vehicle of the characterdescribed, the combination of a framehaving a pair of gears supported thereby \and rotatable each aboutavertical axis, a track carried by each of said gears, .each track havingtwo circumferentially spaced inclines, a table having a roller for eachinclined portion of said tracks,l and means for driving the gearssimultaneously in opposite directions thereby to raise and lower saidtable.

7." In a vehicle of the character described,

the combination of a frame having longitudinally lspaced supports forverticallyr ex- I tending'shafts, means for' bracing said supports, anda racew'ay surrounding each of said supports, a vertical shaft in eachof said supports, va gear on each of said shafts each having a racewaycorresponding with the raceway on the frame, anti-friction devicesinterposed between said ra/ceways, an inclined track carried by each ofsaid gears, a table, means carried by the table adapted to engage eachof said tracks, and meansfor kdriving the said gears thereby to raiseand lower the table.

8. In avehicle of the character described, the combination of a frame, apair of worm gears supported by said frame and rotatable each about avertical axis and each having a lrotary track provided with an incline,said trac-k being coaxial with said gears, a shaftcarried by said bed orframe and having a worm meshing with each of said gears, and a tablehaving means adapted to engage the tracks whereby the table may beraised and lowered by the rotation of the said shaft.

9. In a vehicle'of the character described the combination of a framehaving a pair ofi longitudinallyspaced hubs and a ribconnecting saidhubs or sleeves and provided with a raceway surrounding each hub, ashaft in each hub, a gear on each shaft and each having a racewaycoperating with one of the first-'mentioned raceways, there beinganti-friction devices interposed between said raceways, a circulartrackV on each of said gears, each track having a' pair of opposedinclines, a table, rollers depending from said table and adapted toengage and be operatedby the inclined portions of said tracks, a shaft,`and gears on said shafts cooperating with the rst mentioned gearswhereby the rotation oi the shaft will operate said gears to raise andlower said table.

10. In a vehicle of the character described, the combination of a frame,a pair of longitudinally spaced gears carried by `the bed or frame andeachrotatable about a vertical "axis and each having an inclined track,a

table having portions adapted to engage the tracks, a shaft having gearsthereon adapted to mesh with the first-mentioned gears, a sprocket onsaid shaft, a post projecting upwardly from the said frame, a sprocketon said post, a chain coperating with said sprockets, and meansconnected with the sprocket on thepost for rotating the same.

11. In a vehicle of the character described, the combination of a framehaving cast therewith a pair ofcircular raceways, a pair of gears eachhaving a circular racewa c0- operating with one of the first mentionedraceways and each having a circula;` track provided with a pair ofoppostely disposed inclines, a table having a depending skirt formedtherewith, the said skirt and the bed or frame having interengagingguides, rollers depending from the table and ada ted to engage theinclines on thetracks, a s aft CHARLES F. SCHULTIS.

